7.8high
CVE-2017-8246
In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned substream->runtime->private_…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
7.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.2%
percentile 7%
Public exploits
0
none known
Summary
In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned substream->runtime->private_data. Later, prtd is freed. However, prtd is not sanitized and set to NULL, resulting in a dangling pointer. There are other functions that access the same memory (substream->runtime->private_data) with a NULL check, such as msm_pcm_volume_ctl_put(), which means this freed memory could be used.
Exploit prediction (EPSS)
0.17% probability of exploitation in the next 30 days, higher than 7% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Qualcomm, Inc. Android for MSM, Firefox OS for MSM, QRD Android
Classification
- Weakness
- CWE-416 Use After Free
References
- source.android.com /security/bulletin/2017-07-01 · x_refsource_CONFIRM, x_transferred
- codeaurora.org /use-after-free-alsa-pcm-playback-kernel-module-cve-2017-8246 · x_refsource_CONFIRM, x_transferred
Sources
- CVE List: CVE-2017-8246
- NVD: CVE-2017-8246
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